Mercedes Mason (/meɪsɒn/; born March 3, 1982), sometimes credited as Mercedes Masohn, is a Swedish American actress known for playing the role of Zondra in the American television series Chuck and the role of Isabel Zambada in the American procedural drama The Finder. She starred in the 2011 American horror film Quarantine 2: Terminal. She played Louise Leonard in the 2012–13 American supernatural drama 666 Park Avenue.